import java.util.Date;
import static java.lang.Math.*;
public class practice {
    public static void main(String[] args) {
        /*Date date=new Date();
        System.out.println(date.getTime());*/
//        double x=30;
//        double y=40;
//        double ret=sqrt(pow(x,2)+pow(y,2));
//        System.out.println(ret);

      /*  Student stu=new Student();
        stu.setAge("18");
        stu.setName("hzp");
        System.out.println(stu.getName());
        System.out.println(stu.getAge());*/
    }
}
